Condensation pump and household appliance comprising same

Abstract

The condensation pump comprises a synchronous motor, a pump shell assembly and an impeller, and the pump shell assembly is provided with a rotor cavity for containing a rotor assembly in the synchronous motor and an impeller cavity for containing the impeller; the rotor cavity is divided into an installation cavity body and an exhaust cavity body in the axial direction, the rotor assembly is located in the installation cavity body, the exhaust cavity body is arranged close to the impeller, the inner diameter of the installation cavity body is smaller than that of the exhaust cavity body, and a water baffle for separating the two cavity bodies is arranged at the connecting end of the exhaust cavity body and the impeller cavity. A center hole in clearance fit with the motor shaft is formed in the center of the water baffle, and in the negative pressure state, gas moves from the impeller cavity to the exhaust cavity through the center hole. According to the condensation pump, the rotor cavity is adjusted into two sections and can be matched with a deeper water storage tank, meanwhile, the water baffle is additionally arranged, when the motor runs, negative pressure is formed above the impeller, air in the impeller cavity is rapidly exhausted through a middle hole of the water baffle, air exhausting of the condensation pump is more convenient, the overall structure is simple, and performance is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of household appliance design, in particular to a condensation pump and a household appliance comprising the same, which is mainly used for household appliances such as a clothes dryer and an air conditioner. Background Art

[0002] With the progress and development of society, people's requirements for quality of life are gradually increasing. The emergence of clothes dryers eliminates the time-consuming and labor-intensive traditional method of drying clothes and the trouble of taking up space, making it convenient to take out clothes and put them away immediately.

[0003] like Figure 1 As shown, the rotor cavity length of the existing condensation pump on the market is short, and the matching water storage tank is shallow, which cannot adapt to a deeper water storage tank. At the same time, due to the gap between the motor shaft 11 and the bearing seat assembly 7, water easily enters the rotor cavity, affecting the motor efficiency. The purpose of the utility model is to provide a condensation pump using a synchronous motor and a simple structure. Utility Model Content

[0004] In order to solve the technical problems in the prior art that the condensation pump cannot be adapted to a deeper water storage tank and the rotor cavity is easily infiltrated with water, the utility model provides a condensation pump and a household appliance including the same to solve the above problems.

[0005] The utility model proposes a condensing pump, comprising a synchronous motor, a pump casing assembly and an impeller, wherein the pump casing assembly comprises a rotor cavity for accommodating a rotor assembly in the synchronous motor and an impeller cavity for accommodating an impeller; the rotor cavity is axially divided into an installation cavity and an exhaust cavity, the rotor assembly is located in the installation cavity, the exhaust cavity is arranged close to the impeller, and the inner diameter of the installation cavity is smaller than the inner diameter of the exhaust cavity, a water baffle plate for blocking the two cavities is arranged at the connecting end of the exhaust cavity and the impeller cavity, a middle hole is arranged in the center of the water baffle plate for matching with the clearance of the motor shaft, and under a negative pressure state, the gas moves from the impeller cavity to the exhaust cavity through the middle hole.

[0006] Furthermore, the diameter of the middle hole of the water retaining plate is 7 mm to 8 mm.

[0007] Furthermore, the outer diameter of the water baffle is 25 mm to 27 mm, and the height of the water baffle is 3.3 mm to 3.5 mm.

[0008] Furthermore, a bearing assembly is provided at one end of the installation cavity connected to the exhaust cavity.

[0009] Furthermore, one or more exhaust holes are provided in the exhaust cavity, and the exhaust holes are located above the water baffle.

[0010] Furthermore, two exhaust holes are provided, and the two exhaust holes are located at different heights.

[0011] Furthermore, the pump casing assembly has a water inlet pipe and a water outlet pipe connected to the impeller cavity; the central axis of the water outlet pipe is parallel to the central axis of the rotor cavity, and the distance difference a between the two is 35mm to 50mm.

[0012] Furthermore, the distance difference a between the central axis of the water outlet pipe and the central axis of the rotor cavity is 41.5 mm.

[0013] Furthermore, the pump casing assembly includes a pump body and a pump cover, the rotor cavity is located on the pump body, the pump body and the pump cover form an impeller cavity, the stator assembly of the synchronous motor is arranged outside the installation cavity, and the pump body located outside the installation cavity also has a support plate for supporting the stator assembly.

[0014] Furthermore, a liquid level sensor installation hole is provided on the support plate.

[0015] The utility model also provides a household appliance, comprising the above-mentioned condensation pump.

[0016] The beneficial effects of the utility model are:

[0017] (1) The condensate pump described in the utility model adjusts the rotor cavity into two sections, with a longer extended dimension, which can be adapted to a deeper water storage tank. At the same time, a water baffle is added. When the motor is running, negative pressure is formed above the impeller, and the air in the impeller cavity is quickly discharged through the hole in the water baffle, which makes it more convenient to exhaust the condensate pump. The overall structure is simple and the performance is higher.

[0018] (2) The utility model increases the distance between the impeller cavity and the bearing assembly, effectively preventing condensed water from entering the rotor cavity.

[0019] (3) The utility model provides an exhaust hole in the rotor cavity, and the air discharged by the negative pressure of the impeller cavity can be discharged more quickly through the exhaust hole. At the same time, when the condensate level in the water tank is higher than the exhaust hole, the condensate pump can enter the impeller cavity through the exhaust hole, which is more conducive to the rapid drainage of the condensate pump and improves the drainage performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0021] Figure 1 is an axial cross-sectional view of a condensate pump in the prior art;

[0022] Figure 2 This is a front view of a specific embodiment of the condensate pump described in the utility model;

[0023] Figure 3 It is an exploded view of the condensate pump of the utility model;

[0024] Figure 4 It is an axial cross-sectional view of the condensate pump of the utility model;

[0025] Figure 5 It is an axial cross-sectional view of the water retaining plate in the utility model;

[0026] Figure 6 It is a schematic diagram of exhaust of the condensate pump described in the utility model.

[0027] In the figure, 1, rotor assembly, 2, stator assembly, 3, impeller, 4, rotor cavity, 401, installation cavity, 402, exhaust cavity, 5, impeller cavity, 6, water baffle, 601, center hole, 7, bearing assembly, 8, exhaust hole, 9, pump casing assembly, 901, water inlet pipe, 902, water outlet pipe, 903, pump body, 904, pump cover, 905, support plate, 10, liquid level sensor installation hole, 11, motor shaft. DETAILED DESCRIPTION

[0028] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0029] Embodiment 1

[0030] The condensate pump usually includes a motor, a pump casing assembly 9 and an impeller 3. The motor has a rotor assembly 1 and a stator assembly 2. The pump casing assembly 9 has a rotor cavity 4 for accommodating the rotor assembly 1 in the motor and an impeller cavity 5 for accommodating the impeller 3. The condensate pump described in the utility model is mainly used in household appliances with large torque requirements such as dryers and air conditioners, so the motor adopts a synchronous motor.

[0031] In view of the problems existing in the existing technology, such as Figure 2-Figure 4 As shown, the rotor cavity 4 in this embodiment is axially divided into an installation cavity 401 and an exhaust cavity 402, the rotor assembly 1 is located in the installation cavity 401, the exhaust cavity 402 is arranged close to the impeller 3, and the inner diameter of the installation cavity 401 is smaller than the inner diameter of the exhaust cavity 402, and the connecting end of the exhaust cavity 402 and the impeller cavity 5 is provided with a water baffle 6 that blocks the two cavities, and the center of the water baffle 6 is provided with a middle hole 601 that is gap-matched with the motor shaft 11, and under negative pressure, the gas moves from the impeller cavity 5 to the exhaust cavity 402 through the middle hole 601.

[0032] like Figure 4 As shown, the installation cavity 401 is located at the top, the exhaust cavity 402 is located at the bottom, the rotor assembly 1 is installed in the installation cavity 401, and the stator assembly 2 is sleeved on the outside of the installation cavity 401. The setting of the exhaust cavity 402 can make the rotor assembly 1 extend longer, so as to adapt to a deeper water storage tank, and at the same time, it also increases the distance between the rotor assembly 1 and the impeller cavity 5, reducing the risk of water entering the rotor assembly 1.

[0033] The water baffle plate 6 can prevent water from entering the rotor cavity 4. The center hole 601 in the center of the water baffle plate 6 can leave a small gap for gas to discharge. Since there is a distance between the impeller cavity 5 and the installation cavity 401 equipped with the rotor assembly 1, and a bearing assembly 7 is usually provided below the rotor assembly 1 to rotatably connect the motor shaft 11 with the pump housing assembly 9, the bearing assembly 7 has a certain sealing effect, so the liquid will not reach the rotor assembly 1. In addition, the water baffle plate 6 has a high center and low sides. If the center area is small, water will accumulate on the sides, resulting in noise during exhaust. Since the water baffle plate 6 needs to be set in accordance with the inner diameter of the exhaust cavity 402, the cross-sectional area of ​​the water baffle plate 6 can be increased by increasing the inner diameter of the exhaust cavity 402, thereby making the water baffle plate 6 flatter (such as Figure 4 and Figure 5 As shown), the amount of water collected on the side of the water baffle 6 is reduced, thereby reducing the exhaust noise and making it more convenient for the condensate pump to exhaust.

[0034] When the synchronous motor is running, negative pressure is formed above the impeller 3, and the air in the impeller cavity 5 quickly enters the rotor cavity 4 through the middle hole 601 of the water baffle 6 (such as Figure 6 As shown), the pressure in the impeller chamber 5 is released.

[0035] According to the synchronous motor adapted to this embodiment, the diameter of the middle hole 601 of the water baffle 6 is preferably 7 mm to 8 mm.

[0036] In a further design, the outer diameter of the water baffle plate 6 is 25 mm to 27 mm, and the height of the water baffle plate 6 is 3.3 mm to 3.5 mm.

[0037] The bearing assembly 7 can be installed in the installation cavity 401 or in the exhaust cavity 402. In order to increase the exhaust space and reduce the modification of the original bearing assembly 7, the present embodiment preferably sets the bearing assembly 7 in the installation cavity 401 at one end connected to the exhaust cavity 402.

[0038] Embodiment 2

[0039] On the basis of the first embodiment, one or more exhaust holes 8 are provided in the exhaust cavity 402, and the exhaust holes 8 are located above the water baffle 6. The air discharged by the negative pressure of the impeller cavity 5 can be discharged more quickly through the exhaust holes 8. At the same time, when the condensed water level in the water tank is higher than the exhaust holes 8, the condensed water can enter the impeller cavity 5 through the exhaust holes 8, which is more conducive to the rapid drainage of the condensate pump and improves the drainage performance. Therefore, the exhaust hole 8 not only has an exhaust function, but also has a water intake function.

[0040] like Figure 2 and Figure 6As shown, the present embodiment is provided with two exhaust holes 8, and the two exhaust holes 8 are located at different heights. Preferably, one of the exhaust holes 8 is close to the upper end of the exhaust cavity 402. When the exhaust hole 8 at a lower height is submerged by condensed water, the exhaust hole 8 at the upper side is above the liquid level and can still be used for exhaust.

[0041] Embodiment 3

[0042] Based on the above embodiment, the pump casing assembly 9 has an inlet pipe 901 and an outlet pipe 902 connected to the impeller chamber 5. Condensed water enters the impeller chamber 5 from the inlet pipe 901 and is discharged from the outlet pipe 902 driven by the impeller 3. The central axis of the outlet pipe 902 is parallel to the central axis of the rotor chamber 4, and the distance difference a between the two is preferably 35 mm to 50 mm.

[0043] The condensation pump of the prior art has an unreasonable design of the distance between the rotor cavity 4 and the water outlet pipe 902, which affects the demoulding effect of the mold. In this embodiment, the distance between the two is optimized, and the optimization makes it easier to demould the part mold.

[0044] In this embodiment, Figure 4 As shown, the distance difference a between the central axis of the water outlet pipe 902 and the central axis of the rotor chamber 4 is 41.5 mm.

[0045] Embodiment 4

[0046] On the basis of the above embodiment, the pump housing assembly 9 includes a pump body 903 and a pump cover 904, the rotor cavity 4 is located on the pump body 903, the pump body 903 and the pump cover 904 surround the impeller cavity 5, and the stator assembly 2 of the synchronous motor is arranged outside the mounting cavity 401. Since the utility model adds the exhaust cavity 402, the distance between the end surface of the pump body 903 that covers the pump cover 904 and the stator assembly 2 is increased, and it cannot serve as a support for the stator assembly 2. For this reason, Figure 3 As shown, in this embodiment, a support plate 905 for supporting the stator assembly 2 is further provided on the pump body 903 located outside the installation cavity 401 , and the water outlet pipe 902 extends from the pump cover 904 to above the support plate 905 .

[0047] In a further design, since the support plate 905 is not in contact with the impeller chamber 5 , a liquid level sensor mounting hole 10 may be provided on the support plate 905 for mounting a liquid level sensor to monitor in real time the distance that the condensed water level exceeds the impeller chamber 5 .

[0048] The utility model also provides a household appliance, comprising the above-mentioned condensation pump, and the household appliance may be a clothes dryer, an air conditioner, a dishwasher, etc.

[0049] In the description of the present invention, it should be understood that the terms "center", "up", "down", "top", "bottom", "inside", "outside", "axial" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0050] In addition, in the description of the present invention, unless otherwise specified, “plurality” means two or more.

[0051] In this specification, the schematic representation of the terms does not necessarily refer to the same embodiment. Moreover, the specific features, structures, materials or characteristics described can be combined in any suitable manner in one or more embodiments.

[0052] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without deviating from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A condensate pump, characterized in that: It comprises a synchronous motor, a pump casing assembly (9) and an impeller (3), wherein the pump casing assembly (9) has a rotor chamber (4) for accommodating a rotor assembly (1) in the synchronous motor and an impeller chamber (5) for accommodating an impeller (3); The rotor cavity (4) is axially divided into an installation cavity (401) and an exhaust cavity (402); the rotor assembly (1) is located in the installation cavity (401); the exhaust cavity (402) is arranged close to the impeller (3); the inner diameter of the installation cavity (401) is smaller than the inner diameter of the exhaust cavity (402); a water baffle (6) is arranged at the connection end between the exhaust cavity (402) and the impeller cavity (5) to block the two cavities; a middle hole (601) is arranged at the center of the water baffle (6) to be clearance-matched with the motor shaft (11); and under a negative pressure state, gas moves from the impeller cavity (5) to the exhaust cavity (402) through the middle hole (601).

2. The condensate pump according to claim 1, characterized in that: The diameter of the middle hole (601) of the water retaining plate (6) is 7 mm to 8 mm.

3. The condensate pump according to claim 1, characterized in that: The outer diameter of the water baffle (6) is 25 mm to 27 mm, and the height of the water baffle (6) is 3.3 mm to 3.5 mm.

4. The condensate pump according to claim 1, characterized in that: A bearing assembly (7) is provided at one end of the installation cavity (401) connected to the exhaust cavity (402).

5. The condensate pump according to claim 1, characterized in that: One or more exhaust holes (8) are arranged in the exhaust cavity (402), and the exhaust holes (8) are located above the water baffle (6).

6. The condensate pump according to claim 5, characterized in that: Two exhaust holes (8) are provided, and the two exhaust holes (8) are located at different heights.

7. The condensate pump according to claim 1, characterized in that: The pump casing assembly (9) comprises a water inlet pipe (901) and a water outlet pipe (902) which are connected to the impeller chamber (5); the central axis of the water outlet pipe (902) is parallel to the central axis of the rotor chamber (4), and the distance difference a between the two is 35 mm to 50 mm.

8. The condensate pump according to claim 7, characterized in that: The distance difference a between the central axis of the water outlet pipe (902) and the central axis of the rotor chamber (4) is 41.5 mm.

9. The condensate pump according to claim 1, characterized in that: The pump casing assembly (9) comprises a pump body (903) and a pump cover (904); the rotor cavity (4) is located on the pump body (903); the pump body (903) and the pump cover (904) form an impeller cavity (5); the stator assembly (2) of the synchronous motor is arranged outside the installation cavity (401); and the pump body (903) outside the installation cavity (401) also has a support plate (905) for supporting the stator assembly (2).

10. The condensate pump according to claim 9, characterized in that: The support plate is provided with a liquid level sensor mounting hole (10).

11. A household appliance, characterized in that: Including the condensate pump according to any one of claims 1-10.

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